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Finding the Fourth Proportional to 487,710.48, 731,697.21 and 203,306.52

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Solution

The fourth proportional to 487,710.48, 731,697.21 and 203,306.52 is: 305,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,710.48 : 731,697.21 = 203,306.52 : x
  2. Step 2: Convert to fraction form
    487,710.48/731,697.21 = 203,306.52/x
  3. Step 3: Cross multiply
    487,710.48x = 731,697.21 × 203,306.52
  4. Step 4: Simplify right side
    487,710.48x = 148,758,813,458.81
  5. Step 5: Solve for x
    x = 148,758,813,458.81/487,710.48
  6. Step 6: Final answer
    x = 305,014.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.